The state medical examiner has identified the body found in a Yale lab building as that of graduate student Annie Le. The report ruled the manner of death a homicide.

"In order to facilitate the investigation, we are not releasing the cause of death," said a spokesperson at the medical examiner's office.

Police found Le's body around 5 p.m. Sunday, on what was to have been the 24-year-old's wedding day. She was reported missing Tuesday. Her ID, money, credit cards and purse were found in her third-floor office at a nearby Yale medical school building.

"We're not believing it's a random act," said Officer Joe Avery, a New Haven police spokesman. He would not provide further details but said no one else is in danger.

Other news outlets have published contradictory information about the progress of the investigation, but The Courant and Fox61 have not independently confirmed those reports.

Avery said reports claiming that either a professor or a student is a suspect are incorrect.

"It's simply not true," he said.

An autopsy was under way Monday to verify the identity of the body, found in a cable duct. Police would not say Monday whether they have a suspect but said nobody is in custody.

The body was found at 10 Amistad St., a research building of the Yale School of Medicine complex, where Le was last seen. Police would not say in what area of the building the body was found. Le's family has been contacted, New Haven Assistant Police Chief Peter Reichard said.

Investigators hunkered down on the crime scene Monday morning, sealing off a building that had been open to Yale employees and contractors while the search for Le continued through the weekend.

The building is closed to all students and employees as the investigation continues, according to Dorie Baker, a Yale spokesperson.

Contractors hired to remodel a portion of the building were told to halt work and have been questioned by investigators. An FBI agent was seen at a nearby Lowe's hardware store purchasing a number of large blue tarps. The agent declined to comment but said such tarps are often used to block the view of a crime scene from the public.

Police put up crime scene tape and have blocked off streets leading to the building. The road closures snarled morning traffic and forced police to reroute motorists down one-way roads in both directions.

Yale University officials are planning a candlelight prayer vigil for Le at 8 p.m. Monday on Cross Campus at the Ivy League university. An e-mail to the Yale community invites participants to "bring a candle and join us in solidarity."

Yale President Richard C. Levin met this morning with a group of Yale community members in Annie Le's academic area and briefed them on the status of the investigation and steps Yale has taken to assist it, said Yale spokesman Tom Conroy.

Levin was joined by the University Chaplain, the head of Yale's mental health services, the dean of the graduate school and the dean of the medical school, as well as campus security officials, Conroy wrote in a release.

Meanwhile, Yale Vice President Linda Lorimer reported that those with essential research responsibilities in the Amistad building are being accompanied into the building by police. Others in the building are being given an extra day of paid time off. When the building does reopen, there will be extra security at the facility for the foreseeable future.

Also, Yale has increased security and police patrols on the streets in the area and added a new bicycle patrol. Yale also added security personnel inside Sterling Hall of Medicine, where Annie Le had her lab, Lorimer said.

By the end of the day, the university expects to have a web page for updates on the investigation at http://opa.yale.edu/investigationupdate.